Minority Breast Cancer Survivors: The Association between Race/Ethnicity, Objective Sleep Disturbances, and Physical and Psychological Symptoms

Table 5

Multiple regression analysis of race/ethnicity and symptoms in relation to sleep actigraphy parameters (𝑁=78).

Dependent variable	Primary predictors	Unstandardized coefficient		Standardized coefficients	𝑇	𝑃 value	Adjusted 𝑅 squared
		𝑏	Std. error	𝛽
SOL (minutes)	Race/ethnicity	−2.72	5.22	−0.091	−0.522	0.603
	Depression	−0.262	0.505	−0.104	−0.519	0.605
	Depression by race/ethnicity	0.617	0.304	0.502	2.03	0.046*
							0.110
SOL (minutes)	Race/ethnicity	−6.44	6.65	−0.216	−0.968	0.336
	Fatigue	−2.69	2.81	−0.195	−0.959	0.341
	Fatigue by race/ethnicity	3.39	1.57	0.596	2.17	0.033*
							0.090
SE (percent)	Race/ethnicity	0.722	1.94	0.082	0.372	0.711
	Fatigue	0.280	0.819	0.069	0.342	0.733
	Fatigue by race/ethnicity	−0.774	0.456	−0.463	−1.70	0.094
							0.101
SE (percent)	Race/ethnicity	−2.62	1.35	−0.299	−1.94	0.056*
	Pain	−1.14	0.717	−0.339	−1.59	0.117
	Pain by race/ethnicity	−0.298	0.410	0.177	0.727	0.469
							0.064
WASO (minutes)	Race/ethnicity	2.89	4.95	0.090	0.585	0.560
	Pain	6.43	2.64	0.522	2.44	0.017*
	Pain by race/ethnicity	−1.98	1.51	−0.322	−1.32	0.192
							0.064

SE: sleep efficiency; SOL: sleep-onset latency; WASO: wake after sleep onset.
*Correlations are significant at the 0.05 level.